From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 9C5333858284; Tue, 30 Aug 2022 11:43:12 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 9C5333858284 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1661859792; bh=AXA4PDW0F/wK6snIdr5d0f526P0t7LA6wKqG662CJU8=; h=From:To:Subject:Date:In-Reply-To:References:From; b=MfJvzgWgnFxp8XUnSb9tB3WQdyn4UpaHFdKfXB3EUZHhCWvvdUsEUiVBAA3qzgqqv RNY3ikyNmI3TtRXZzP+3MRezkVUTv62B4xnwWFVDw++QT35csM84kLwbgGV/PZRRsG rGGelQnW23OFfC3RsvEuxe7/wUuHaZO69k8cN1YE= From: "rguenth at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/73550] Another wrong -Wmaybe-uninitialized warning in switch statement Date: Tue, 30 Aug 2022 11:43:11 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: tree-optimization X-Bugzilla-Version: 7.0 X-Bugzilla-Keywords: diagnostic, missed-optimization X-Bugzilla-Severity: normal X-Bugzilla-Who: rguenth at gcc dot gnu.org X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 List-Id: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D73550 --- Comment #7 from Richard Biener --- The diagnostic is gone in GCC 12+ and re-appears with adding -fno-thread-ju= mps because: MAX_NUM_CHAINS exceeded: 8 and the logic is extra stupid in building 8 chains but no more but then when building predicates rejecting exactly the case of 8 chains ...=